/**
* Generates a new raw SHA-1 hash signature for a Sqon file manager.
*
* @param FileInterface $file The Sqon file manager.
* @param boolean $signed The Sqon has a signature?
*
* @return string The new raw SHA-1 hash.
*/
public function generate(FileInterface $file, $signed = false)
{
$context = hash_init('sha1');
$bytes = 0;
if ($signed) {
$bytes = $file->size() - 20;
}
$file->seek(0);
foreach ($file->iterate($bytes) as $buffer) {
hash_update($context, $buffer);
}
return hash_final($context, true);
}
/**
* Returns the size of the Sqon.
*
* @return integer The size of the Sqon.
*/
private function getSize()
{
if (null === $this->size) {
$position = $this->file->tell();
$this->size = $this->file->size();
$this->file->seek($position);
}
return $this->size;
}
/**
* Writes the contents of the Sqon.
*
* @param FileInterface $sqon The Sqon file manager.
* @param FileInterface $bootstrap The PHP bootstrap script file manager.
* @param FileInterface $database The database file manager.
*/
public function write(FileInterface $sqon, FileInterface $bootstrap, FileInterface $database)
{
$sqon->stream($bootstrap);
$sqon->stream($database);
$sqon->seek(0);
$sqon->write((new Signature())->generate($sqon));
}
/**
* {@inheritdoc}
*/
public function stream(FileInterface $file, $bytes = 0, $buffer = 1024)
{
foreach ($file->iterate($bytes, $buffer) as $chunk) {
$this->write($chunk);
}
}
